Improvement in surfacing fabrics with bronze or metallic powders



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JOSEPH'B. BATCHELDER, OF BOSTON, MASSACHUSETTbb-ee Letters Patent No.89,27 4, dated April 27. 1869.

IMPROVEMENT IN SURFACING FABRICS WITH BRONZE OR METALLIC POWDERS. W TheSchedule referred to in these Letters Patent and making part of thelame.

To all whom it may concern.-

Be it known that I, JOSEPH B.-BATCHELDER, of Boston, in the county ofSuffolk, and State of Massachusetts, have invented an Improvement inSurfacing with Bronze or. Metal Powders; and I do hereby declare thatthe following is a description of my invention, suflicient to enablethose skilled in the art to practise it.

My invention relates to surfacing semi-flexible ma terial, likeenamelled card-hoard, paper, &c., with gold or with bronze or metallicpowders, with reference to the production of smooth, glisteningsurfaces, in contiadistinctionto the powdery or dull surfaces now madeby application of such bronze or metallic powders.

In practising my improvement, I first cover the surface, or portions ofsurface to be metallized, with size,

then rub, over the sized surface, the bronze or metallic powder, whichadheres to the size, and, finally, calender the metallized surfacebetween calender-rolls,

audit is in this last step in the process that my invention consists.

Heretofore, in gilding or imparting a metallic lustre to card-board,&o., by application of bronze or metallic powders, it has been customaryto simply apply the powder to the sized surfaces with a cloth, and thendry the surface, without further manipulation, and the metallizedsurface has an unburnished appearance, or

a surface in which the metal appears as if powdered upon it, and not asif it were laid on in leaf-'form, smoothed out. But,hy my improvement,the powdery particles are flattened and merged by the pressure of thecalender or burnishing-roll, so that a surface is imparted thatresembles highly-burnished or polished metal, and the surface soproduced is more enduring, by

reason of the condensation and union of the particles. I claim'theimprovement in surfacing with metal or bronze powders substantially asdescribed.

J. B. BATOHELDER.

Witnesses J. B. OROsBY, Emois GOULD.

